Bolt snap-hook.



J. B. BAXTER.

BOLT SNAP HOOK.

APPLICATION FILED IuIIE 5.1913.

1 1 8%,31 1L Patented Apr. 6, 1315..

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THE NORRIS PETERS 60., FHOTC-LITHll, WASHINGTONv By C.

TlN TTED TATFQ PATENT OFFTQE.

JOHN B. IBAX'IER, OF WATERVLIET, NEW YORK, ASSIGNOR TO COVERT MANUFAC- TUBING COMPANY, OF WATERVLIET, NEW YORK, A CORPORATION 01? NEW YORK.

BOLT SNAP-HOOK.

Application filed June 5, 1913.

To all whom it may concern Be it known that 1, JOHN B. BAXTER, a citizen of the United States, residing at Watervliet, in the county of Albany and State of New York, have invented certain new and useful Improvements in Bolt Snap- Hooks, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to an improvement in snap hooks, and pertains more particularly to an improvement in that type of snap hook now commonly known as the sliding bolt type, such as disclosed in the patent to James C. Covert No. 620569, lVfarch 7, 1899.

The invention is designed to preserve the acknowledged and appreciated advantages of the sliding bolt type of hook and to overcome the disadvantages of accidental withdrawal of the bolt, and in that particular the thumb piece for retracting the bolt is placed at the back of the hook immediately in the rear of the laterally projecting part of the hook portion of the casting, the hook portion thereby serving as a guard for the thumb piece. In the manufacture of this type of hook it is usual and customary to dip or finish the castings after the barrels have been properly formed and to thereafter place the bolts in place, applying pressure only to the end of the bill of the hook to bend it inwardly in front of the end of the bolt. To enable the construction of a. hook of this character with the thumb piece at the rear and to permit the assemblage thereof after the body has been finished is the purpose of the present invention.

A further improvement of the invention resides in a novel construction of bolt proper, one readily insertible in the barrel and in this particular the preferred construction of bolt illustrated herein may be described as a two-part one, the .members being insertible from the open end of the barrel, and one of said members having a finger engaging part to project through the side slot of the barrel. The adjacent ends of the bolt members are adapted to interengag to hold the bolt in place.

Other and further improvements and novel details in the construction and arrangement of parts will be apparent from the description to follow, which for a clear understanding of the invention is to be con- Specification of Letters Patent.

Patented Apr. 6, 1915.

Serial No. 771,981.

sidered in connection with the accompanying drawings forming a. part hereof and wherein is disclosed for the purpose of illustration a. convenient and satisfactory embodiment of the invention.

In the drawings: Figure 1 is a side elevation of the hook, parts being shown in section; Fig. 2 is a front plan view, and, Fig. 3 is a cross section on the line 3-3 of Fig. 1, looking in the direction of the arrow; Fig. 4 is a similar section of a slightly modified form of barrel, and, Fig. 5 is a perspective view of the bolt parts removed.

l/Vith more particular reference to the drawings, 1 is an elongated shank, preferably taking the form of a cylindrical barrel, the wall of which may be integral or solid with a longitudinal recess as illustrated in Fig. 4, or as illustrated in the other figures of the drawing said barrel is formed by forcing together the side walls of a substantially U-shaped casting and thereby forming a substantially closed cylinder. The rear end of the barrel is closed, as indicated at 2, and conveniently connects with an integral loop or eye part 3. The hook part is preferably offset at its back, seen at 4, and has a return bill part 5 projecting toward the forward end of the barrel, and sufficiently spaced therefrom to form an entrance mouth 6 adapted for the reception of the ring or other part to be engaged. The hill 5 is in substantial alinement with the longitudinal axis of the barrel and is constructed to form an abutment for the forward end of a sliding locking bolt to be now described.

The forward end of the shank barrel 1 is open at 7, and intermediate the ends of the barrel at the back thereof, or that portion of the rear of the offset part 4: of the hook, is a relatively short and narrow longitudinally extending slot 8, the wall of the barrel being otherwise closed and continuous so as to form a substantially continuous cylindrical bearing for the sliding bolt, which said bolt is of a character to be readily inserted through the open end of the barrel. The preferred construction of bolt comprises a main or body part 9 having a forward end 10 projecting through the open end of the barrel and adapted to engage the abutment formed by the bill 5 of the hook and a cooperating engaging part 11. The bolt part 9 has a relatively thin outward projection 7 17 interposed between the closed end 2 of the barrel and the rear end of the bolt part 11 serves to hold the bolt members in engagement, "as we'll as to force the projecting end of the 'Inainbolt part 9 into locking contact with the bill of the hook. When the adjacent ends of the hook members are in engagement, due to the action of the spring, as explained, the main bolt part 9 is locked in place, as it is impossible to turn the same so as to release the finger piece 12, until the bolt members are separated. If it is desired to remove thebolt parts, it being understood that the bill of the hook has been offset to the dotted position of Fig. 2, this may be r adily accomplished by inserting a pin, k nifeor other instrument through the slot Sand workingthe same between the adjacent ends of the bolt members, thereby forcing the rear member 11 against the action of the spring 17 out of contact with the main bolt part 9, which latter by a slight rocking movement is released from the barrel. a,

It has been seen that the bolt is preferab'ly of a diameter greater than the width of the slot 8 whereby a substantially continuous bearing is provided projecting entirely about the bolt, and the finger piece 12 is suiiicien'tly narrow to permit of its readily passing throughfthe slot from the interior of the barrel. The finger piece 12 preferably inclines. rearwardly as illustrated, to provide convenient andefiicien't grasping surface and also to assist in the assembling of the finger piece through 'the slot from the open end of the barrel.

In the assembling and removal of the bolt members it is customary to first have the bill of the hook casting slightly laterally ofl'set so as to be out of line with the open end of the barrel 1, as illustrated indotted lines in Fig. 2. Then the parts arei-n assembled position, the bill'5 is bent into a position in alinement with the barrel so as to provide "an abutment for the bolt in the manner previously described. 4

By the 'presentconstruction it is possible to form a casting having a substantially closed barrel except for the slotan'd front end opening. The slot being relatively narrow and short will obviate toa large extent the possibility of dust, water and the like assing into the chamber or the barrel and "said "slot being "closed at its forward end provides against any accidental separation of the bolt from the barrel. It is also possible to place the desired finish upon the closed or substantially closed casting prior to the application of the bolt and spring while preserving the advantages of having the finger piece of the bolt at the rear of the hook part by which latter it is protected from accidental operation. 7

Having thus described the invention, what is claimed is:- I V 1. In a bolt snap hook, the combination with a body part having 'a longitudinal central bore and an end hook part projecting from one side thereof, the said side being formed with an elongated slot, and "the opposite side of the body part being closed throughout, the said bore being open at the hook end thereof, a bolt fitted in the bore and having an outward projection constituting a thumb piece extending through said slot, the bolt with the thumb piece being insertible through the open end of "the bore, and the thumb piece being of a width to be inserted outwardly through said slot.

2. In a bolt snap hook, a barrelportion having a longitudinal bore open at its forwardend and having a relatively -short' elongated slot in one of its sides, said slot being closed at it's ends, a spring pressed bolt 10- cated within the barrel and having a projecting integral thumb piece fitted in the said slot, and an auxiliary bolt within said bore for "securing the. bolt in place.

3. In a bolt snap hook, the combination with a barrel having a longitudinal bore and a narrow relatively short elongated slot closed at its ends, said bore having a hook projection at one end and being open at *the hook end of the barrel thereof, of a bolt fitted to reciprocate in the barrel, and a thumb piece projecting directly 'from'the, bolt through the said slot, said thumb piece being insertible through the open end of the barrel and outwardly through the slot.

'4. Ina sliding bolt snap hook, the combination of a cylindrical barrel having a laterally offset hook'part terminating in a return bill in substantial a linem'e'nt with the forward end of the barrel, said barrel being open at its hook end and having an elongated closed "slot intermediate its ends, a two-part bolt the sections of which are arranged end to'en'd and "slidably' 'mounted in the barrel, one "of said bolt parts having a lateral operating projection insertible outwardly through said slot, and "a spring interposed between the rear end of the barrel and the rear bolt part acting to normally force the forward bolt part into engageinent wit'h the bill of the hook.

5. In a'-sliding b'oltsnap hook, *the "combination off-a cylindrical barrel having a hook part offset earwardly terminating in a bill in substantial ali'neinent with the longitudinal axis of the barrel, the barrel having an open forward end, and an elongated relatively short narrow closed slot in one side intermediate the ends thereof, a two-part bolt member slidably mounted in the barrel, the sections of the bolt being arranged end to end, one of said bolt parts having a laterally projecting finger engaging piece insertible through the slot, the adjacent ends of the bolt having interengaging parts, and a spring interposed between the rear end of the barrel and the rear bolt part acting to hold the bolt parts in engagement with one another and the forward bolt part in contact with the bill.

6. In a snap hook, the combination with an elongated cylindrical barrel open at its front end and having intermediate its ends a longitudinally extending relatively narrow closed slot, the periphery of the barrel being otherwise free from openings, a hook part forming an integral extension of the barrel and offset with the bill thereof arranged in substantial alinement with the barrel, a bolt member having an offset rear end forming a finger piece of a size to be inserted outwardly through the slot of the barrel, and means for maintaining the bolt member in place comprising a spring member interposed between the bolt and closed rear end of the barrel, said bolt and finger piece being insertible through the end of the barrel.

7. In a snap hook, the combination with an elongated cylindrical barrel open at its front end and having intermediate its ends a longitudinally extending relatively narrow slot, the periphery of the barrel being otherwise free from openings, a hook part forming an integral extension of the barrel and offset with the bill thereof arranged substantially in alinement with the barrel, a bolt member insertible through the open end of the barrel and having an offset rear end forming a finger piece of a size to project outwardly through the slot of the barrel, a spiral spring arranged in the barrel to engage the closed end thereof, and a bolt engaging part slidable in the barrel arranged between the said bolt member and spring.

8. A bolt snap hook comprising a cylindrical hollow barrel and a hook part at one end thereof, said barrel being open at its hook end, and having a slot in one side thereof closed at opposite ends, a bolt located within the barrel and having a thumb piece projecting through the slot, said bolt with the thumb piece applied being insertible through the open end of the barrel, and means within the barrel for securing the bolt in position upon the insertion of the same.

9. A bolt snap hook comprising a cylindrical hollow barrel and a hook part, the barrel being open at the hook end thereof, the said barrel having a slot therein closed at opposite ends, a bolt located within the bar rel and having a thumb piece projecting through the slot, and means within the barrel and inclosed thereby for automatically locking the bolt in the barrel upon the insertion of the same, substantially as described.

10. In a bolt snap hook the combination with a barrel portion having a longitudinal bore and a hook part, the barrel having an elongated slot therein, a spring pressed bolt movably positioned in the barrel, and means for securing the bolt in the barrel comprising a member interposed between the spring and the bolt, and inclosed by the wall of the barrel.

11. In a bolt snap hook the combination of an elongated substantially closed cylindrical casting having a hook part at its front end and being open at said end, said cylindrical part having in one of its sides a longitudinally extending relatively short narrow slot closed at its front end, of a bolt having a diameter greater than the width of the slot insertible from the open end of the cylindrical part and having a finger piece insertible outwardly through said slot, said hook part forming an abutment for the bolt, and a spring acting to force the bolt outwardly.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN B. BAXTER.

Witnesses:

CALVIN T. MILANs, CHARLES THOMAS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. G. 

